diff --git a/src/prebid.js b/src/prebid.js
index 3fb131fb02c..9ad72409990 100644
--- a/src/prebid.js
+++ b/src/prebid.js
@@ -915,6 +915,14 @@ $$PREBID_GLOBAL$$.aliasBidder = function (bidderCode, alias, options) {
   }
 };
 
+/**
+ * @alias module:pbjs.aliasRegistry
+ */
+$$PREBID_GLOBAL$$.aliasRegistry = adapterManager.aliasRegistry;
+config.getConfig('aliasRegistry', config => {
+  if (config.aliasRegistry === 'private') delete $$PREBID_GLOBAL$$.aliasRegistry;
+});
+
 /**
  * The bid response object returned by an external bidder adapter during the auction.
  * @typedef {Object} AdapterBidResponse
diff --git a/test/spec/unit/pbjs_api_spec.js b/test/spec/unit/pbjs_api_spec.js
index ae9ea09908a..0867cb0e399 100644
--- a/test/spec/unit/pbjs_api_spec.js
+++ b/test/spec/unit/pbjs_api_spec.js
@@ -3017,6 +3017,20 @@ describe('Unit: Prebid Module', function () {
     });
   });
 
+  describe('aliasRegistry', function () {
+    it('should return the same value as adapterManager.aliasRegistry by default', function () {
+      const adapterManagerAliasRegistry = adapterManager.aliasRegistry;
+      const pbjsAliasRegistry = $$PREBID_GLOBAL$$.aliasRegistry;
+      assert.equal(adapterManagerAliasRegistry, pbjsAliasRegistry);
+    });
+
+    it('should return undefined if the aliasRegistry config option is set to private', function () {
+      configObj.setConfig({ aliasRegistry: 'private' });
+      const pbjsAliasRegistry = $$PREBID_GLOBAL$$.aliasRegistry;
+      assert.equal(pbjsAliasRegistry, undefined);
+    });
+  });
+
   describe('setPriceGranularity', function () {
     it('should log error when not passed granularity', function () {
       const logErrorSpy = sinon.spy(utils, 'logError');